Key Message
• Late-onset sepsis (LOS) is a major cause of morbidity and mortality in preterm neonates, and the optimal approach for using probiotics to prevent LOS remains uncertain.
• Probiotics significantly reduce LOS risk (RR, 0.83; 95% CI, 0.72 to 0.95), with multistrain (RR, 0.76; 95% CI, 0.72 to 0.95) and low-dose formulations (RR, 0.72; 95% CI, 0.56 to 0.91) showing greater efficacy. Supplementation shortens hospital stays.
• These findings support the use in probiotics in neonatal care, as they enhance immune defense and reduce infection burden.
• This study informs clinical guidelines and highlights probiotics’ potential to improve neonatal outcomes and reduce healthcare costs.